Banks Power Banks Power Techni-Cooler Intercooler System, 2004.5-2005 LLY
Fits 2004-2005 6.6L Duramax V8 (LLY)
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An intercooler cools the air after the turbo squeezes it. Cooler air is denser, which is what the engine actually wants. This one is the Banks Power Banks Power Techni-Cooler Intercooler System, 2004.5-2005 LLY, listed to fit the 2004-2005 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (LLY).
why this one — The gain shows up on repeat hard pulls and towing, where the stock cooler heat-soaks, more than on a single run. DmaxStore lists it at $1459.00, and the fitment above is what the listing itself states, not a guess.
No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.